Fault Detection of Aircraft System with Random Forest Algorithm and Similarity Measure

Table 5

Computation of similarity measure.

Similarity measure		A; (normal)	B; (normal)	C; (fault)	D; (fault)
𝑠𝑚𝛿𝑒(𝐹𝑁,𝑝)		1.00	0.05	0.05	0.05
𝑠𝑚𝛿𝑒(𝑝,𝐹𝐹)		0.00	0.00	1.00	1.00
𝑠𝑚𝛼(𝐹𝑁,𝑝)		0.33	0.08	1.00	0.92
𝑠𝑚𝛼(𝑝,𝐹𝐹)		1.00	0.00	0.16	0.42
Results only (6)	𝑠(𝐹𝑁,𝑝)	1.33	0.13	1.05	0.97
	𝑠(𝑝,𝐹𝐹)	0.78	0.00	1.16	1.42
Results with Table 2	𝑠(𝐹𝑁,𝑝)	2.92	0.25	1.72	1.59
	𝑠(𝑝,𝐹𝐹)	1.60	0.00	2.64	3.06